DUCTILE (S.G.) IRONS
S.G. iron is an engineering material distinguished by its high strength, toughness and ductility, combined with excellent casting properties and good machinability. It has a high modulus of elasticity and good resistance to corrosion and wear.
S.G. iron is available with a full range of matrix structures and properties resulting from alloying and heat treatment. All grades of the Australian Standard, AS1831 are available.
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AS1831 |
Mechanical Properties |
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Tensile Strength |
0.2% Proof Stress |
Elongation |
Brinell Hardness (HB) |
Microstructure |
|
Grade |
MPa min. |
MPa min. |
% min. |
min. |
max. |
|
|
350-22 |
350 |
220 |
22 |
- |
150 |
Ferrite |
|
400-18 |
400 |
250 |
18 |
130 |
180 |
Ferrite |
|
400-15 |
400 |
250 |
15 |
130 |
180 |
Ferrite |
|
450-10 |
450 |
310 |
10 |
160 |
210 |
Ferrite |
|
500-7 |
500 |
320 |
7 |
170 |
230 |
Ferrite + pearlite |
|
600-3 |
600 |
370 |
3 |
190 |
270 |
Pearlite + ferrite |
|
700-2 |
700 |
420 |
2 |
225 |
305 |
Pearlite |
|
800-2 |
800 |
480 |
2 |
245 |
335 |
Pearlite or tempered structure |
|
900-2 |
900 |
600 |
2 |
280 |
360 |
Bainite or tempered martensite |
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TYPICAL APPLICATIONS:
- Pump bodies
- Rolls
- Sprockets
- Sheaves
- Brackets
- Gears
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